Important information/formulae
|
Sr. No. |
Physical
quantity |
SI Unit |
|
1 |
Electric
charge |
C
(coulomb) |
|
2 |
Electric
current |
A (ampere) |
|
3 |
Potential
difference |
V (volt) |
|
4 |
Resistance |
Ω (ohm) |
|
5 |
Heat energy |
J (joule) |
|
6 |
Electric
power |
W (watt) |
|
Sr. No. |
SI unit |
|
|
1 |
1 ampere |
1 A = 1
C/1 s |
|
2 |
1 volt |
1 V = 1
J/1 C |
|
3 |
1 ohm |
1 Ω = 1
V/1 A |
|
4 |
1 watt |
1 W = 1 V
x 1 A |
|
Sr. No. |
Quantity |
Value |
|
1 |
Charge on 1
electron |
1.6 x
10-19 C |
|
2 |
1 mA |
1 x 10-3
A |
|
3 |
1 μA |
1 x 10-6
A |
|
4 |
1 unit
electrical energy |
1 kWh 3.6 x 106
J |
|
5 |
1 kW |
1 x 103
W |
